Liam Neeson stars as the potential savior of the wreck's survivors, whose struggles with injuries are compounded by the punishing atmosphere and ravenous wolves. Dermot Mulroney, James Badge Dale ("24") and Frank Grillo are among the others literally fighting for their lives. DVD extras: audio commentary by Carnahan and editors Roger Barton and Jason Hellmann; deleted scenes. *** (R: P, GV) (Also on Blu-ray and Movies on Demand)